US574822A

US574822A - rauscher

Info

Publication number: US574822A
Authority: US
Publication date: 1897-01-05
Anticipated expiration: 1914-01-05

Description

(No Model.) 3 Sheets-Sheet 1;

E. P. RAUSCHER.

GOAL MINING MACHINE.

nted Jan. 5, 1897.

I k J W n 1 V A W A V -u v w 0 Y 1. F v, N

(N0 Modl.) 3 Sheets-Sheet 2. E. P. RAUSGHER. COAL MINING MACHINE.

No. 574,822. Patented Jan. 5, 1897.

UN TED; STATES PATENT OFFICE.

EDWARD P. RAUSCHER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE MORGAN- GARDNER ELECTRIC COMPANY, .OF SAME PLACE.

COAL-MINING MACHINE.

SPECIFICATION forming part of Letters Patent No. 574,822, dated January 5, 1897.

Application filed April 23,1896. $eria1No.588,747. (No model.)

To ctZZ whom it may concern: as well as the mechanism for feeding the slid- Be it known that I, EDWARD P. RAUSCHER, ing frame and chain thereon into the work. a citizen of the United States of America, re- For this purpose a solid framework b is sesiding at Chicago, in the county of Cook and cured to the sliding frame at the rear end, 55 5 State of Illinois, have invented certain new thereof which does not enter the channel cut and useful Improvements in Coal-Mining Maby the machine. This framework is seen in chines, of which the following is a specificaend elevation in Fig. 2 and in section in Fig. tion. 3. Looking at the latter figure it will be seen My invention relates to certain improvethat a shaft 0 is journaled therein carrying 6o 10 ments in mining-machines of the class known upon its middle portion an armature C, about as channeling:machines, said improvewhich are arranged the necessary auxiliary ments being directed to the portions of the devices to make up an electric motor, and at machine which feed the cutting mechanism the lower end the same shaft carries a pininto the coal and return the same. ion 0, fast thereon in mesh with a gear-wheel 65 I 5 The purpose of the invention is to provide d, fast upon a shaft 62, journaled in a bracket devices to protect the machinery from break- (2 secured to the frame b, and also carrying age under an unusual strain, devices for aubelow the gear-wheel a sprockct-rs 'heel d and tomatically reversing the feed when the cutabove the bracket a Worm d". The cuttingting mechanism has reached the limit of its chain passes about the sprocket-wheel d and 7o movement into the coal, and devices for auis driven thereby, and the worm-whcel d is tomatically stopping the feed at the end of provided with suitable connections whereby the return movement. it moves the sliding frame B back and forth To such end the invention consists in cerupon its stationary frame. tain novel features fully set forth in the fol- The thread upon the worm (Z is such that 7 5 lowing description and defined in the appendthe movement of the same tends to raise the ed claims. worm, and said worm is movable up and down In the drawings presented herewith, Figupon the shaft cl. To withstand the tendure 1 is a plan of the portions of a miningency of moving upward, a washer E, of commachine necessary toillustrate myinvention. paratively weak material, as, for instance, 80

Fig. 2 is a section in line 2 2 of Fig. 1, lookcast-iron, is placed upon the shaft, and above ing in the direction of the arrow 2 in said figthe washer a metal tube E is fitted upon the ure. Fig. 3 is a broken section in line 3 3 of shaft, the bottom of said tube being beveled the same figure, looking in the direction of the and resting in a corresponding beveled hole arrow 3. Fig. at is a broken plan, upon an enin the top of the washer E. The washer and 85 larged scale, of a portion of Fig. 1. Fig. 5 is tube are held down upon the worm by a nut a broken section in line 5 5 of Fig. 4, lookscrewed upon the end of the shaft d. This ing in the direction of the arrow 5; and Fig. washer is made of such strength that in case (3 is a broken section in line 6 6 of Fig. 4, any unusual obstruction is met with in the looking in the direction of the arrow 6. coal the washer will break before the other 90 0 Looking at Fig. 1, a frame A will be seen parts of the machine and protect the latter which is stationary with respect to the work from injury. and which carries a longitudinally-sliding The worm d meshes with a suitable gear frame 13, guided by ways a in the frame A, F upon a shaft f, journaled horizontally in and carryingin practiceacutting-chain which brackets d d and extending laterally across 5 extends completely around the frame and the frame from side to side. At the opposite across the head 1) thereof, where it encounends of said shaft are'two gears f f, loose ters the coal and cuts the channel therein. upon the shaft and having upon their inner This chain is not shown in the drawings for faces series of teeth f opposed to correthe reason thatit is a common feature of this sponding teeth g g upon collars G G, keyed no class of machines. The sliding frame l3 also upon the shaft f, but longitudinally movable carries the driving mechanism for the chain thereon. These collars are spaced apart by lars being such that when one is in engage ment with one of the gears the other is thrown out of engagement with the gear upon the opposite end of the shaft. The gear f meshes with a gear 71, fast upon a shaft II, also journaled in the brackets (1. Another gear h, fast upon the same shaft, engages by means of an intermediate gear h with the gear f Because of this intermediate gear the motion imparted to the shaft II by the gear f is the reverse of the motion imparted by the gear The shaft ll extends at both ends beyond the journals and without the same carries two gears 7L3 7L meshing with racks a a upon the stationary frame A. To insure the complete mesh with these racks, rollers X Y, journaled in the brackets (1 are arranged upon the 0pposite sides of the racks. The rotation of the gears 71.3 7t" moves the sliding frame or carriage back and forth upon the stationary frame or base, and the reversible clutch carried by the frame G and above described provides means for imparting the desired motion to this feedin g device. To move this frame G back and forth to reverse the feed,a lever K is employed, which isbest shown in Figs. at and 5. This lever has an arm 75, pivoted to the frame G2 at 70, avertical portion k j ournaled in brackets 70 upon the frame I), and an arm 75, extending laterally over the rack a. Upon this rack are arranged two pins or stops L L. (See Fig. 1, also Figs. 2, 23, and 4:.) These steps are so located that the arm b will engage the stop L when the carriage reaches the limit ofits motion into the coal and the stop L when the carriage is wholly withdrawn therefrom.

In the drawings the carriage is shown as upon its return movement, the clutch being thrown to the left. \Vhen the arm reaches .the stop L, it will disengage the clutch and stop the carriage.

At the right end of the frame G in Figs. 1 and 2 and at the top in Fig. 4: will be seen a coiled spring Z, tending to crowd the clutch toward the left in Figs. 1 and 2. To start the carriage into the coal, the arm 7& is moved still farther away from the stop until the collar g engages with the pinion f which starts the carriage on its inward movement. When this movement is once made, the resistance of the carriage prevents the spring Z from disengaging the clutch until the inward movement is completed, when the disengagement is caused by the striking of the arm 7& against the stop L, and as soon as the clutch is disengaged from the ri ght-h and pinion the spring Z engages it with the lefthand pinion and starts the return movement.

I claim as new and desire to secure by Letters Patent-- In a device of the class described, the com bination with the driven shaft, cl, and worm, d, longitudinally movable thereon, of the hollow washer, E, resting upon said worm and having a conical hole in its upper end, and a collar, E,havinga corresponding conical end resting in the conical hole in the washer, whereby the collar, E, will split thewasher, E, before sufficient strain is put upon the other portions of the machine to injure the same; substantially as described.

EDXVARD P. RAUSGIlER.

\Vitnesses:

JAMES P. GARDNER, ROBERT RYAN.